Malicious PDF — malware analysis report

Static analysis result for SHA-256 a46c116fea9337d3…

MALICIOUS

PDF

83.7 KB Created: 2021-03-21 03:11:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 999a6f30df14c9e2fd0d9b4a6cc62db4 SHA-1: 3da3b5b6a3afe0970d444131c3c68a6aff425b0e SHA-256: a46c116fea9337d35ceb5deacea8b29f63aeb2bf6d8cedba8e1c1e66baeedb73
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://kuzutuzo.ru/aws?utm_term=is+dirt+devil+a+good+vacuum+cleaner PDF link annotation
    • http://kubisobej.22web.org/story_elements_lesson_plan.pdfIn PDF document text
    • https://cdn.sqhk.co/jawadagive/mSxjbhj/vexar.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500670/normal_5fe302bf326f4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495039/normal_5fe3455911ed5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366980/normal_5fdb9174e87d0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379618/normal_5ff94c51d04e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379362/normal_6051fdf2d7413.pdfIn PDF document text
    • https://cdn.sqhk.co/vefuwatak/djh1fha/top_100_hits_2011_australia.pdfIn PDF document text
    • http://warowusavi.mywebcommunity.org/how_to_do_interior_design_for_bedroom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/stone_age_worksheets_ks1.pdfIn PDF document text
    • http://ximitexus.epizy.com/scjp_java_8_book.pdfIn PDF document text
    • http://pumikowexudat.onlinewebshop.net/15229584175.pdfIn PDF document text
    • http://dupepoge.onlinewebshop.net/pune_ring_road_map_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/gaxufotizosomoz.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/babysitting_business_cards_templates_free_printable.pdfIn PDF document text
    • http://ketaxesam.epizy.com/wink_meme_template.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/jeppesen_pacific_airway_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/89396140861.pdfIn PDF document text
    • http://purewowesajumu.myartsonline.com/unicorn_magic_book_series.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001093e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1093E 5256 bytes
SHA-256: d197d1a81ab528ea94af65b7e7c02be2bf4b195d102cda88db749b85c4db776b
font_01_sfnt_off00011b0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B0D 11368 bytes
SHA-256: 6fe1df3506cddd950748e419b3e0564832c66354a0a1a90040e653686d4815c4

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